JP5486321B2 - Waste steam recovery device - Google Patents

Description

  The present invention is, for example, waste steam discarded from various steam-using devices such as shrink tunnels, steamers, rubber vulcanizers, etc., and is recovered by exchanging heat so that it can be trapped inside and outside the factory building. It is related with the waste steam recovery device which can eliminate.

  The waste steam recovery unit is a shrink tunnel that uses steam, and vacuum suction means that consists of an ejector, a liquid tank, and a circulation pump connected by a waste steam recovery pipe. By sucking with the sucking means, it is possible to eliminate waste steam that can get trapped.

  In this waste steam recovery device, a large amount of cooling water must be discharged from the nozzle part of the ejector, and the temperature of the mixed fluid of waste steam and cooling water mixed in the ejector becomes low, and this mixed fluid There was a problem that the usage of was limited.

Japanese Patent Laid-Open No. 2002-5582

  The problem to be solved is to provide a waste steam recovery device that can maintain the temperature of the mixed fluid of waste steam and cooling water at a relatively high temperature.

  In the present invention, the waste steam flowing down from the steam device is discharged to a predetermined location.In the waste steam passage through which the waste steam flows, a heat exchange means including a tank provided with a cooling water injection part is interposed, A two-stage jet scrubber as a suction means is connected, the first suction port of the two-stage jet scrubber is connected to the liquid outlet of the heat exchange means, and the second stage of the two-stage jet scrubber The suction port is connected to the steam outlet of the heat exchange means.

  The waste steam recovery apparatus of the present invention heat-condenses a part of the waste steam by heat exchange means to condense it into condensate, and sucks it from the liquid outlet to the first suction port of the two-stage jet scrubber. The amount of waste steam sucked from the steam outlet of the heat exchange means to the suction port of the two-stage jet scrubber can be reduced, and the amount of cooling water discharged by the jet scrubber can be greatly reduced. And the temperature of the mixed fluid of cooling water can be kept relatively high.

The block diagram which shows the Example of the waste steam recovery apparatus of this invention.

  In the present invention, a two-stage jet scrubber is used, and a conventionally known jet scrubber can be appropriately used.

  In this embodiment, as shown in FIG. 1, the waste steam recovery apparatus is composed of a waste steam passage 1, a heat exchange means 2 connected to the waste steam passage 1, and a two-stage jet scrubber 4 as a suction means. Configure.

  The heat exchange means 2 connected to the waste steam passage 1 is constituted by a tank 3 provided with a cooling water injection part 5. A cooling water supply pipe 7 is connected to the cooling water injection section 5 and is not shown, but a cooling water injection nozzle is attached to the inner end of the tank 3 of the cooling water injection section 5 and supplied from the waste steam passage 1. The cooling water is injected into the waste steam, and a part of the waste steam is condensed to be condensed water.

 A steam outlet 8 is provided on the right side of the tank 3 to communicate with the second suction port 10 of the two-stage jet scrubber 4, and a liquid outlet 9 is provided at the lower end of the tank 3 to form a two-stage type. The jet scrubber 4 communicates with the first stage suction port 11.

 The two-stage jet scrubber 4 includes a first-stage jet scrubber 12 and a second-stage jet scrubber 13 arranged in series. A high-pressure water supply pipe 14 is connected to the upper part of the first-stage jet scrubber 12. A hot water discharge pipe 15 is connected to the lower part of the second-stage jet scrubber 13.

The waste steam that flows down from the left to the right in the waste steam passage 1 is partially condensed in the tank 3 of the heat exchange means 2 to become condensate, and the condensate and cooling water are the first stage from the liquid outlet 9. While being sucked into the suction port 11, the water-separated steam is sucked from the steam outlet 8 into the second-stage suction port 10.

  Thus, the amount of waste steam sucked from the steam outlet 8 of the heat exchange means 2 to the second stage suction port 10 is reduced, and the amount of cooling water as high-pressure water discharged by the jet scrubber 4 is greatly reduced. Therefore, the temperature of the mixed fluid of the waste steam and the cooling water discharged from the hot water discharge pipe 15 can be kept relatively high.

  INDUSTRIAL APPLICATION This invention can be utilized for what collect | recovers waste steam discarded from various steam use apparatuses by heat exchange.

DESCRIPTION OF SYMBOLS 1 Waste steam passage 2 Heat exchange means 3 Tank 4 Two-stage jet scrubber 5 Cooling water injection part 8 Steam outlet 9 Liquid outlet 10 Second stage suction port 11 First stage suction port 14 High pressure water supply pipe 15 Hot water discharge pipe

Claims (1)

In what discharges the waste steam flowing down from the steam device to a predetermined place,
A waste water passage through which the waste steam flows is provided with a cooling water injection part for injecting cooling water into the waste steam, and a heat exchange means comprising a tank for separating the waste steam into condensate and steam is interposed for suction. Connecting a two-stage jet scrubber as a means,
A high-pressure water supply pipe is connected to the upper part of the first stage of the two-stage jet scrubber;
The first-stage suction port of the two-stage jet scrubber, discharging the condensate and the cooling water of the waste steam the separation, as well as connected to the liquid outlet of the previous SL heat exchange means,
Said second-stage suction port of the two-stage jet scrubber, discharges the steam the separation, waste vapor recovery apparatus is characterized in that connected to the steam outlet of the heat exchange means.